At some point your service provider (presumably AT&T) will notice the higher volume even if you hack it. After that, you're at their mercy. Again, your better off just sucking it up and paying for internet service.

On a side note, although I don't know about the legality of it now, once tethering is officially supported doing it without paying for it will be against the TOS for your provider and technically illegal. As such, the following Forum Guideline will apply:

Quote:

Originally Posted by MF Community Guidelines

Don’t discuss or conduct content theft or any other illegal activity. Period. We follow U.S. law on the forums, so just because something might be legal in your country doesn’t mean it will be allowed here. If you’re ever in doubt, contact one of the moderators before you post.

If you plan on sticking around here, I'd go look at the guidelines, I think you might want to understand what type of community this is.